Feed-roll



(Nd Model.)

G, H. MARSH. FEED ROLL.

No. 477,428. Patented June V21, 1892.

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GEORGE HENRY MARSH, OF SAN FRANCISCO, CALIFORNIA.

FEEDe-ROLL.

SPECIFICATION forming part of Letters Patent No. 477,428, dated June 21,1892.

Application filed April 17, 1891.

To all whom t may concern,.-

Be it known that I, GEORGE HENRY MARSH, a citizen of the United States,residing in the city and county of San Francisco, State of California,have invented certain new and useful Improvements in Feed-Rolls, ofwhich the following is a specification.

My invention relates to feed-rolls for stickers or molding-machines,piani ng-inachines, and other Wood-Working machinery, and especially tofeed-rolls of the class or descri-ption in which the teeth are formed ofseparate removable plates. Y

The improvements constituting thisinvention consist of a novelconstruction and combination of body and clamping rings or eollars andteeth-plates. Also a novel form of tooth having V- shaped notchesalternating with plain or straight edge portions.

The object of these improvements is mainly to secure a firm and solidset of the teeth in the body and ready loosening of the parts to removeany one of the teeth-plates for repairs, and With respect to the form ofthe tooth itself to afford betterorimproved biting and holding qualityupon the work, particularly upon the irregular surfaces of moldings.

'lhefollowing is a description of my iinproved feed-roll and the mannerin which I construct it, the accompanying drawings forming part of thisspecification being referred to by letters.

Figure l represents a feed-roll for a sticking or molding machineconstructed according to my invention. Fig. 2 is an end View of Fig. l,looking from the right. Fig. 3 is a central longitudinal section of theparts in detail. Fig. 4 is a View of one of the teethplates.

A indicates the body of the roll; VA', a hub or part to slip over theshaft and Iix the body in position for Work, and B B are theteethplates.

C C are rings or collars set closely against the ends of the body andheld by screws.

In the body are longitudinal slots or deep grooves extending parallelwith the axis and at equal distances apart all round the circumference,the number of which correspond with the number of teeth-plates in theroll. The teeth-plates are set into these grooves in the Serial No.389,293. (No model.)

body for about one-half the depth of the plates and the body, or thatportion of the tooth-plate con fined in the groove, has the same shapeas the groove to slip into it from one end of the roll. The projectingportion of each tooth-plate, which I term the Working part of the plate,has the same length as the body A, and the rings or the collars C setclosely against the end of the roll; but the base or lower portion ofthe tooth-plate in the groove projects beyond the roll at both ends, asshown at b. Thisnib or projection is shaped to t into a groove in theinner face of the Vring C, and therefore the Whole set or number ofteeth-plates are held tightly in place by the two rings when those partsare drawn up against the ends of the body by the screws. To remove anyone or several of the teeth one of the rings is removed from the end ofthe bodyand the tooth-plateis slipped out of its groove by driving itout from the opposite end. In this operation it is not necessary toloosen the other ring, and the remaining teeth-plates are notdisturbedin any Way.

New teeth-plates are quickly and accurately adjusted in the body Withoutspecial skill or care on the part of the Workman and without consumingmuch time, as the inserted tooth must necessarily be in position andmust have the proper amount ot' projection from the periphery of thebody When the collar C is set in place and drawn up against the end. ofthe body.

In constructing the teeth for my improved feed-roll, I divide the edgeor acting part of the tooth-plate by V-shaped notches bx into separatesections of about equal length, each section or port-ion having a sharpcorner on both ends which is formed by cutting the aforesaid V-shapednotches. this construction is to give a better or more certain bitingand holding action of the acting part of the tooth than is obtained by astraight or continuous edge, and particularly to secure a rrn holdwithout slip upon molded surfaces and inclined or uneven faces of thepieces being run through the machine. I have found in practice that anacting edge of this form possesses excellent gripping qualities and willactwell when in use for a con- The result of 4 IOS) siderable length oftime even When it is Worn down.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

l. The herein-described feed-roll for Woodworking machines, comprisingthe body A, having slots or grooves extending from end to end andradially around the circumference toward the axis, theinserted removableteethplates B in said grooves having nibs or projections b on the ends,which project beyond the ends of the body, and the rings C, having`grooves in their inner faces, which take the said projections of theteeth-plates, and the screws taking through said rings into the body asa means of securing the rings in place, substantially as set forth.

2. The combination,.Wit-h the body A, of an insertible tooth-platehaving a projecting acting portion or edge with alternate smooth orplain sections, and V-shaped notches bX,which are arranged, asdescribed, to produce separated acting edges with sharp corners on eachtooth, as set forth. c

In testimony that I claim the foregoing I have hereunto set my hand andseal.

GEO. HENRY MARSH. [L 8.]

Witnesses:

C. W. M. SMITH, OTIs V. SAWYER.

